I'm trying to leverage Sugar's logging facility in my custom code, but I'm not seeing any of my logging calls appear in the logfile.

Logging for Sugar is set to debug:
log4php.rootLogger=debug, A2

And in my code I've got:
$GLOBALS['log']->debug("TEST TEST TEST");

I don't see any errors in httpd.conf or anything rsembling my string in sugarcrm.log. I know my code is executing. I've tried including/not-including config.php, log4php/LoggerManager.php, etc...

What obvious thing am I missing?